Sorry, went back & saw you DID post soil & nutes! Your soils good, good foliar feeding, you can use that as soil drench, but would be better to go with something higher phosphorus & lower nitrogen now that you're in flower. I use Tiger bloom by fox farms. There are many out there. You'll probably want to stay with organics.---- I see your plants are mature. This is indicated by the fact your leaves/branching is no longer parallel, but alternating. Just out of curiosity, how tall are they?